Pump barrel



Marh 25, 1930.

E. E. lGREVE t PUMP BARREL Filed March .28,l 1928 INVENTOR Patented Mar. 725, 19304 UNITED STATES.

EDGAR E. GREVE, F BELLEVUEVPENNSYLYANIA PUMP BARREL Applica-umana March 2s, 1928. serial No. 265,284;

My invention relates to impfovements in pump barrels of the character especially de- Y signed to be employed in oil well pumps. In

pump barrels of the type referred to, it isv 5 customary to provide the barrel with removable liners, but, as heretofore constructed, the liners have been rather expensive to make and have been the cause of considerable trouble in properly positioning them in the shell of the barrel and removing them therefrom.

kOne of the prime objects of the present inventionis to provide al working barrel, em-

bodying removable liners that maybe made at a relatively lowv initial cost, and of such construction that the liners thereof will pro erly line up when inserted in the shell of t e barrel and will reinforce the shell.

Other objects of my'invention are, to pro` vide a new and improved working barrel embodying `a plurality of removable liner sections of such character that 'they may be readily inserted into and removed from-the shell of the barrel, and to provide a construction in which the liners .may be removed from the shell when necessary with a minimum of labor and expense.

My invention contemplates the provision of projecting contacting elements on each section of the liner, said elements being arranged in vertically extending rows and in spaced-apart and staggered relation. The said contacting elements are adapted to have a Vrelatively close fit with the interior of the shell, thereby reinforcing the shell of the barrel.

In the accompanying drawings, which ilL lustrate an application of my invention:

Fig. lis a central vertical sectional view of a pump barrel embodying my invention;

Fig. 2, an enlarged elevational view showing portions of two liner sections; and

Figs. 3 and 4, similar views showing modied forms of contact elements formed on the periphery of the liner sections. l

Referring to the drawings, and as preferred, 5 designates an outer casing or shell of the working barrel of the pump. The shell is cylindrical in form and is preferably made of steel. 6 and 7 designate'collars located at 50 the upper and lower ends of the shell, said shell being provided with external threads 8 adapted to be entered into the respective interiorly threaded portions 9 of the collars. The said collars 6 and 7 are of the usual or any desired construction. As illustrated, each is provided with a tapering theadedpipe-receiving portion 10 and the interior of each of thecollars, in addition to the threaded portions above specified, is provided with an annular shoulder 11.

A characteristic and important feature of the present invention resides in the sectional liner. In the drawings, I have shown two liner sections, indicated by the numerals 12 and 13. Each of the liner sections, as shown, is formed on its exterior surface with a plurality of vertically extending rows of spacedapart projecting contact elements 14, the said elements of one row being staggered with relation to the elements of an adjacent row. The shape or configuration of these contacting elements may be varied, as shown by Figs. 3 and 4. Thus, the said elements of the form of Fig. 3 are rectangular in shape, while those of the form of Fig. 4 are diamond-shaped,

said respective modified forms of elements being designated by the numerals 14a and 14".

The upper liner section is designed to be entered in the upper collar 6, with its upper edge disposed in contact with the shoulder l1` of Said collar, and the lower liner section is similarly positioned within the lower collar, the lower edge of said lower liner section being disposed in abutting relation with the shoulder 11 of the lower collar.

The adjacent ends of the liner sections are secured in alinement by the provision of a joint 15, comprising male and female portions 16 and 17, respectively formed on the adjacent ends of the liner members 13 and 12.

It will be noted that, by employing a considerable number of these projecting elements on each liner section, I provide reinforcing means for theshell. Said contacting .elements will prevent, to a considerable extent, any bending of the shell 5, which frequently happens where a considerable space is interposed between the interior of the shell and the exterior of the liner sections. Said contact elements also function to aid in lining up the several sections entering into the liner of the shell.

I claim: l

1. In a pump barrel, a tubular replaceable liner for the barrel comprising a plurality of liner sections each having its exterior surface provided with a plurality of spacedapart projecting contact elements providing noncontinuous contacting surfaces, an upper and a lower collar disposed on the upper and lower ends of the barrel and cooperating with the liner.

2. In a pump barrel, a tubular replaceable liner formed of a series of liner sections eachv havlng 1ts exterior surface provlded with rows of spaced-apart'proJectlng contact e1e.

ments providing,r noncontinuous contacting surfaces with the elements of one row staggered with relation to the elements of an adl- )acent row, an upper and a lower collar disposed on the upper and lower ends of the .barrel and cooperating with the liner.

In testimony whereof I aix my signature.

' EDGAR E. GREVE. 

